<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <!--第一步引入css vue.js index.js -->
    <link rel="stylesheet" href="elementui/index.css">
    <script src="elementui/vue.js"></script>
    <script src="elementui/index.js"></script>
</head>
<body>
    <div   id="app">
        <el-container>
            <el-aside width="200px">Aside</el-aside>
            <el-container>
                <el-header height="300px">Header</el-header>
                <el-main>Main</el-main>
            </el-container>
        </el-container>
    </div>
</body>
<style>
    .el-header, .el-footer {
        background-color: #B3C0D1;
        color: #333;
        text-align: center;
        line-height: 60px;
    }

    .el-aside {
        background-color: #D3DCE6;
        color: #333;
        text-align: center;
        line-height: 200px;
    }

    .el-main {
        background-color: #E9EEF3;
        color: #333;
        text-align: center;
        line-height: 160px;
    }

    body > .el-container {
        margin-bottom: 40px;
    }

    .el-container:nth-child(5) .el-aside,
    .el-container:nth-child(6) .el-aside {
        line-height: 260px;
    }

    .el-container:nth-child(7) .el-aside {
        line-height: 320px;
    }
</style>
<script>
    new Vue({
        el: '#app',
        data: function() {
            return { visible: false }
        }
    })
</script>
</html>